I am a total novice when it comes to understanding power supplies and the like. Last year I built myself a multi-camera rig in order to produce realistic human 3D models for animation. I am looking this year to improve on my build. One such area for improvement would be its power supply. Currently each camera has a dummy battery connected to a mains transformer ( https://www.amazon.co.uk/PremiumDigital-Canon-Replacement-Power-Adapter/dp/B00841UIOU )... very messy cables and lots of multi plugs. I would like to remove all the individual power supplies and replace them with a single transformer or even a couple to service all the cameras. At the moment the rig uses 18 canon eos 400d cameras but I plan to double this number so wish to accommodate scalability. Any formulas on how to calculate what I would need a transformer to deliver or any help/guidance would be much appreciated (I do dislike having to cable tie transformers together to try to make them tidy)